FDNY A-35 EXAM LATEST WITH ACTUAL
QUESTIONS AND CORRECT VERIFIED ANSWERS
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Air compressors power... - .....ANSWER ...✔✔ (1)
industrial equipment and (2) construction tools
Examples of equipment powered by air compressor -
.....ANSWER ...✔✔ pneumatic wrenches, lifts in auto
service stations, paint spray booths
Air compressors enable... - .....ANSWER ...✔✔ (1)
efficient repair of all types of vehicles; and (2) facilitate
their safe operation on public thoroughfares
Permit is required for air compressor - .....ANSWER
...✔✔ that compresses air above 100 PSI
Types of air compressors - .....ANSWER ...✔✔ (1)
reciprocating;
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(2) centrifugal;
(3) solar; and
(4) rotary
*Difference is the way in which they compress air
How do air compressors work - .....ANSWER ...✔✔
take the air in a room and force it into a container
UNDER PRESSURE. The more air forced into the
container, the greater the pressure. Compressed air can
be discharged from the container at a controlled rate.
Most common air compressor - .....ANSWER ...✔✔
Reciprocating
Air compressors are sometimes called - .....ANSWER
...✔✔ air pumps
Air compressors can be powered by: - .....ANSWER
...✔✔ (1) electric motors;
(2) internal combustion engines; or
(3) steam turbines
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Explosions & air compressors - .....ANSWER ...✔✔ If
there is a build up of flammable gases (ex: in service
stations and workshops), those gases are heavier than
air and fall to the floor before spreading outward.
These gases are easily ignited by sparks and high
temperatures--which INCLUDES the heat generated by
an air compressor.
To avoid explosions w/ air compressors - .....ANSWER
...✔✔ Raise air compressor at LEAST 5 feet above
ground level so that no flammable gases are drawn into
the compressor. To meet the height requirement you can
place compressor on a shelf or bench OR the air
receiver tank may be turned and stood on end w/ the
air compressor bolted to the top of the tank.
Power to air compressor - .....ANSWER ...✔✔ entire
unit is driven by an electric motor. Motor activates a
series of drive belts. Belts power the moving parts of the
unit--like w/ power steering and alternator in
automobile
Compression Chamber operation - .....ANSWER ...✔✔
Air is compressed in compression chamber which consists
of a PISTON inside a CYLINDER. Piston moves up and
down.